t2.large

the T series is more suitable for non-performance-verified test environments

the T series is more suitable for non-performance-verified test environments

T2 is a burstable instance type If you run out of CPU credits, CPU is throttled and performance degrades

I think the discrepancies can be attributed to the choice of the t-style instances. They are generally over committed.

Aren\'t \'t\' instances burst instances? They need to be under constant load for a long time before their burst credits for CPU, memory, network and EBS run out, after which they fall back on their baseline performance.

I think the discrepancies can be attributed to the choice of the t-style instances. They are generally over committed.

Aren\'t \'t\' instances burst instances? They need to be under constant load for a long time before their burst credits for CPU, memory, network and EBS run out, after which they fall back on their baseline performance.

Thank you for this article. We have T instances for EC2 and RDS and we are expecting some very strange performance behavior. Do you have plan to test RDS?

This is super well documented by aws themselves and if you understood how they work before creating the article then you probably would not have written it. Please do research before writing scare articles just for clicks. That’s just lame brother.

Thank you for this article. We have T instances for EC2 and RDS and we are expecting some very strange performance behavior. Do you have plan to test RDS?

This is super well documented by aws themselves and if you understood how they work before creating the article then you probably would not have written it. Please do research before writing scare articles just for clicks. That’s just lame brother.

I think the discrepancies can be attributed to the choice of the t-style instances. They are generally over committed.

Aren\'t \'t\' instances burst instances? They need to be under constant load for a long time before their burst credits for CPU, memory, network and EBS run out, after which they fall back on their baseline performance.

T2 instances do not have Unlimited mode turned on by default. Without Unlimited mode turned on, once the CPU credits have been exhausted, the server goes into a shallow resource usage state. Its CPU performance and network performance are lessened considerably until the CPU credits have accumulated again. We've seen this first hand on quite a few occasions now, even causing production outages.

Thank you for this article. We have T instances for EC2 and RDS and we are expecting some very strange performance behavior. Do you have plan to test RDS?

This is super well documented by aws themselves and if you understood how they work before creating the article then you probably would not have written it. Please do research before writing scare articles just for clicks. That’s just lame brother.

You can count t2 as upgrade of t1. In general t2 offer faster access to memory and disk compared to t1.

I remember there is a thread talking about whether aws over-sell their cpus. If I can not get consistent 100% cpu usage then it is. But whatever it its, the \"40%\" and \"60%\" in the video still strange and can not be clearly explained.

But it\'s a fact that the hardware specs for e.g. `t2.large` and `m4.large` are either exactly or roughly the same. That means even if you burst on a `t2` you will get the same performance as on `m4`.

Could you explain how can t2 get 60% higher than m4? From t2 instance document, the \"bursting\" is from baseline to 100%, not higher. Just now I launched a t2.medium and a m4.large, made a test using sysbench in ubuntu, they gave almost the same performance.

I have made cpu benchmarks and m4.large result was same with t2.large burst..

But with t2.large, you can only use 60% of a single vcpu, average 30% for each of the two vcpus. Even considering the \"cpu credits\", t2.large seems far weak than m4.large.

This is false information. Instance retirement event is just host maintenance event. NOT THE replacement process.

So, there is no specific date to end support for older instance type, they are retired gradually and we are only notified through scheduled events?

For detailed information on the process and implications of instance retirement, please refer to the following resource: [Understanding Instance Retirement on AWS](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-retirement.html). Additional [Scheduled events for your instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/monitoring-instances-status-check_sched.html)

That's a great news! Thank you for the link

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

If you have an application that needs to run with some basic CPU and memory usage, you can choose t3. It also works well if you have an application that gets used sometimes but not others.

The t3 family is a burstable instance type. If you have an application that needs to run with some basic CPU and memory usage, you can choose t3. It also works well if you have an application that gets used sometimes but not others.

CPU credits only apply to T2/T3 instances.

The t3 family is a burstable instance type. If you have an application that needs to run with some basic CPU and memory usage, you can choose t3. It also works well if you have an application that gets used sometimes but not others.

CPU credits only apply to T2/T3 instances. Each T2/T3 instance accumulates some CPU credits per second and also when it's in use (i.e. not "idle") it spends these CPU credits. When it runs out of credits it either slows down to the baseline performance (T2 default) or keeps running at full speed with you paying for the extra credits needed (T3 default and T2 "unlimited mode").

The t3 family is a burstable instance type. If you have an application that needs to run with some basic CPU and memory usage, you can choose t3. It also works well if you have an application that gets used sometimes but not others.

Depending on the age of the instance, "unlimited CPU" might not have been enabled.

T2 instances are very performant (better processors than m4/5). But the catch is in T2 is that they handle only certain amount of load during 24hrs period. For 24/7 usage M and C are better. But depending on the overall load during a day T2s can be better. For example if you have typical 8 hrs a day usage T2 will probably be good. T2 have daily credit system that allows certain amount of full speed usage during a day then the performance drops (needs to be constant and heavy use for many hours)

I'm trying to be financially prudent whole maximizing performance on a FMS Cloud BYOL configuration.

This is false information. Instance retirement event is just host maintenance event. NOT THE replacement process.

T2 instances are very performant (better processors than m4/5). But the catch is in T2 is that they handle only certain amount of load during 24hrs period.

I'm trying to be financially prudent whole maximizing performance on a FMS Cloud BYOL configuration.

This is false information. Instance retirement event is just host maintenance event. NOT THE replacement process.

So, there is no specific date to end support for older instance type, they are retired gradually and we are only notified through scheduled events?

For detailed information on the process and implications of instance retirement, please refer to the following resource: [Understanding Instance Retirement on AWS](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-retirement.html). Additional [Scheduled events for your instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/monitoring-instances-status-check_sched.html)

That's a great news! Thank you for the link

So, there is no specific date to end support for older instance type, they are retired gradually and we are only notified through scheduled events?

For detailed information on the process and implications of instance retirement, please refer to the following resource: [Understanding Instance Retirement on AWS](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-retirement.html). Additional [Scheduled events for your instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/monitoring-instances-status-check_sched.html)

That's a great news! Thank you for the link

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.

As sktan mentioned, T2, T3a and T3 are burstable, which means you don't get to use 100% of the CPU all the time. If your job is CPU-bound, I doubt a burstable instance will be cost effective.

The difference between t2 and c6g instances is the burstable nature of the t2 instance. A t2.micro is cheap because of the way the credit system works, where you can't always use 100% of your CPU and can only burst there periodically.